• DigDoug@lemmy.world
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    15 hours ago

    LED headlights are godawful astigmatism or no. Whoever invented them should be made to stare directly into the sun for the rest of time.

    • LordKitsuna@lemmy.world
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      15 hours ago

      Only done poorly, which sadly is most cars, even new. They are aimed too fucking high. Headlights are meant to be aimed down at the damn road. Not up high for far reach. That’s the point of highbeams.

      I got projector leds for my car but i properly aimed them, the light has a sharp hard cutoff juuuuust below the windshield on Most sedans at distance to make sure I don’t blind em. If i need more and it’s safe I’ve got my highbeams which turn the road in even the darkest rural to noon.

      • mrgoosmoos@lemmy.ca
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        5 hours ago

        do your headlights adjust when you are on a slope? because if not, then you’re just blinding people at the top of the hill.

        • Tja@programming.dev
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          55 minutes ago

          Most lights from the last bunch of years are matrix and can turn off parts of the beam to avoid blinding other drivers, pedestrians, etc.

      • ryedaft@sh.itjust.works
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        14 hours ago

        The car designers specifically dampen their headlight output in the exact spot where regulators measure their light.

        But there’s also the issue that they have way too much blue light. Blue light still damages eyes even though it’s only UV adjacent and not UV.

        • wintermute@discuss.tchncs.de
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          13 hours ago

          I don’t know about regulations, but you are right about the blue light. Most white LEDs have low CRI, and that’s why things look weird with them.
          The reason they use low CRI LEDs is probably because they are cheaper and produce more lumens per watt.

          • Tja@programming.dev
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            52 minutes ago

            Blue light does not damage things just because it’s “adjacent to UV”. And low cri is good enough for driving, you need to see whether there’s a pedestrian on the side of the road, not to create a nice photographic composition.

        • timik_pipik@lemy.lol
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          13 hours ago

          LED headlights would be fine if they weren’t infinitely bright and a shade of blue/cool white. Just make them a bit warmer and not so bright.

          • ryedaft@sh.itjust.works
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            12 hours ago

            Yeah, what I’m saying is that there are rules about how much you are allowed to blind everyone else and car designers are specifically circumventing them.

            It would also be nice if they were a more pleasant colour.

            The reason why car designers do this is because it sells more cars. People feel safer in a huge SUV / “truck” when though they aren’t. People also feel safer when they can light everything up even though they aren’t.

      • InFerNo@lemmy.ml
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        15 hours ago

        Aiming the LEDs is only a partial solution, as soon as you got a slight incline you’re beaming straight into oncomers’ eyes

        • LordKitsuna@lemmy.world
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          14 hours ago

          That is true but to be quite honest even the people that don’t have LEDs are blinding me when they are at an incline to me. In either situation I’m putting my hand up to try and block it out till they pass

          • InFerNo@lemmy.ml
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            13 hours ago

            There’s something about LEDs, cars with halogens don’t quite have that effect